Epoxy resin production wastewater waste heat recovery system

Abstract

The utility model relates to the technical field of waste heat recovery, and provides an epoxy resin production wastewater waste heat recovery system which comprises a first heat exchanger, a second heat exchanger, a heating boiler, a double-effect distillation device and an evaporation dish, epoxy resin production wastewater is introduced into a first heat exchange channel of the first heat exchanger, and distilled water is introduced into a second heat exchange channel of the first heat exchanger; epoxy resin production waste gas is introduced into a first heat exchange channel of the second heat exchanger, and distilled water is introduced into a second heat exchange channel of the second heat exchanger; second heat exchange channels of the first heat exchanger and the second heat exchanger are communicated with the heating boiler; a steam outlet of the heating boiler is communicated with the double-effect distillation device; and a discharge hole of the double-effect distillation device is communicated with the evaporation dish. The device can recover and utilize heat of waste water and waste gas in epoxy resin production, so that the energy utilization rate is increased, and the enterprise cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery system for epoxy resin production wastewater. Background Art

[0002] Epoxy resin production consumes a lot of energy and generates large amounts of high-temperature wastewater and exhaust gases. The heat energy from these wastewater and exhaust gases cannot be fully and effectively utilized, resulting in significant energy waste. Therefore, the recovery and utilization of wastewater and exhaust gases from epoxy resin production is crucial. The primary goal of waste heat recovery from epoxy resin production wastewater is to convert this underutilized heat into usable energy, thereby reducing energy consumption and lowering production costs. Utility Model Content

[0003] The utility model mainly solves the technical problem that a large amount of heat energy is wasted when waste gas and wastewater are discharged from the current epoxy resin production, and the heat energy cannot be fully and effectively recovered and utilized. A waste heat recovery system for wastewater from epoxy resin production is proposed, which can recover and utilize the heat of wastewater and waste gas from epoxy resin production, improve energy utilization rate, and reduce enterprise costs.

[0004] The utility model provides an epoxy resin production wastewater waste heat recovery system, comprising: a first heat exchanger, a second heat exchanger, a heating boiler, a double-effect distillation device, and an evaporating dish;

[0005] Epoxy resin production wastewater is introduced into the first heat exchange channel of the first heat exchanger, and distilled water is introduced into the second heat exchange channel of the first heat exchanger;

[0006] Epoxy resin production waste gas is introduced into the first heat exchange channel of the second heat exchanger, and distilled water is introduced into the second heat exchange channel of the second heat exchanger;

[0007] The second heat exchange channels of the first heat exchanger and the second heat exchanger are in communication with the heating boiler;

[0008] The steam outlet of the heating boiler is communicated with the double-effect distillation device;

[0009] The discharge port of the double-effect distillation device is communicated with the evaporating dish.

[0010] Preferably, it further comprises: a dryer;

[0011] The dryer is used to dry the crude crystal product formed in the evaporating dish.

[0012] Preferably, the first heat exchanger and the second heat exchanger are connected to the heating boiler through an insulated pipe.

[0013] Preferably, the first heat exchanger is a liquid-liquid tube heat exchanger, and the second heat exchanger is a vapor-liquid tube heat exchanger.

[0014] Preferably, the heating boiler is a sealed steam heating boiler.

[0015] Preferably, the evaporating dish is a drying and heating hybrid evaporating dish.

[0016] The utility model provides a waste heat recovery system for epoxy resin production wastewater, which uses two heat exchangers to exchange heat from high-temperature wastewater and high-temperature exhaust gas, and can recover and utilize the heat of wastewater and exhaust gas from epoxy resin production, thereby improving energy utilization and reducing pollution. When waste gas and waste liquid are passed into the recovery system of the utility model, a large amount of heat can be recovered and produced through the manufacture of by-products, saving economic benefits for the enterprise and increasing environmental benefits. The use of pipeline insulation transportation reduces heat loss and improves fluid transportation efficiency and safety. Double-effect distillation technology achieves efficient energy utilization by reusing steam, greatly improving the energy efficiency of the distillation process. The device of the utility model is simple, low-cost and highly stable, with low maintenance costs, which is conducive to long-term use by enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the waste heat recovery system for epoxy resin production wastewater provided by the utility model.

[0018] Figure numerals: 1. first heat exchanger; 2. second heat exchanger; 3. heating boiler; 4. double-effect distillation device; 5. evaporating dish; 6. dryer. DETAILED DESCRIPTION

[0019] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, rather than all of its contents.

[0020] like Figure 1 As shown, an embodiment of the present invention provides an epoxy resin production wastewater waste heat recovery system, comprising: a first heat exchanger 1, a second heat exchanger 2, a heating boiler 3, a double-effect distillation device 4, and an evaporating dish 5.

[0021] Epoxy resin production wastewater flows through the first heat exchange channel of the first heat exchanger 1, and distilled water flows through the second heat exchange channel of the first heat exchanger 1. Epoxy resin production waste gas flows through the first heat exchange channel of the second heat exchanger 2, and distilled water flows through the second heat exchange channel of the second heat exchanger 2. The first heat exchanger 1 and the second heat exchanger 2 utilize efficient and energy-saving vapor-liquid heat exchange technology, exchanging heat between high-temperature waste gas and distilled water through the heat exchangers. Liquid heat exchange technology utilizes flowing distilled water as the medium for efficient heat transfer.

[0022] The second heat exchange channels of the first heat exchanger 1 and the second heat exchanger 2 are connected to the heating boiler 3; specifically, the first heat exchanger 1 and the second heat exchanger 2 are connected to the heating boiler 3 through an insulated pipe. The insulated pipe transportation reduces heat loss and improves fluid transportation efficiency and safety.

[0023] The steam outlet of the heating boiler 3 is connected to the double-effect distillation device 4. The discharge port of the double-effect distillation device 4 is connected to the evaporation dish 5. The double-effect distillation device 4 uses double-effect distillation technology to reuse steam to achieve efficient energy utilization, greatly improving the energy efficiency of the distillation process.

[0024] The epoxy resin production wastewater waste heat recovery system of the present invention utilizes the waste heat in the system multiple times, relatively reducing the heat input into the system, and further comprises: a dryer 6; the dryer 6 is used to dry the crude crystal product formed in the evaporation dish 5.

[0025] In the present invention, the first heat exchanger 1 utilizes a liquid-liquid tube heat exchanger to exchange heat between wastewater and distilled water; the second heat exchanger 2 utilizes a vapor-liquid tube heat exchanger to exchange heat between waste gas and distilled water. The heating boiler 3 utilizes a sealed steam heating boiler to convert distilled water into high-temperature steam for heating. The double-effect distillation apparatus 4 utilizes high-temperature steam for both distillation and heating of wastewater, heating the wastewater into a salt concentrate. The evaporating dish 5 utilizes a drying and heating hybrid evaporating dish to convert the concentrate into crude crystals. The dryer 6 utilizes a large drying and heating device to evaporate the water from the crude crystals.

[0026] The present invention provides a waste heat recovery system for epoxy resin production wastewater. The system operates as follows: high-temperature wastewater is introduced into a first heat exchanger 1, and high-temperature exhaust gas is introduced into a second heat exchanger 2. The first and second heat exchangers 1 and 2 utilize room-temperature distilled water as a heat exchange medium to exchange heat with the high-temperature wastewater and exhaust gas, thereby increasing the temperature of the distilled water. The first and second heat exchangers 1 and 2 then introduce the distilled water, which has been heated after heat exchange, into a heating boiler 3 via an insulated pipe. In the heating boiler 3, the distilled water is centrally heated to convert it into steam. The steam generated by heating is passed into a double-effect distillation unit 4. In the double-effect distillation unit 4, the steam is used to heat and evaporate the raw material. The evaporated raw material vapor is condensed to form a raw material concentrate. The raw material concentrate is then introduced into an evaporating dish 5. As the water evaporates further, crude crystals gradually form. The crude crystals are removed from the evaporating dish 5 and placed in a dryer 6 for further dehydration, yielding the final product.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications to the technical solutions described in the above embodiments, or equivalent replacement of some or all of the technical features therein, do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A waste heat recovery system for epoxy resin production wastewater, characterized in that: include: A first heat exchanger (1), a second heat exchanger (2), a heating boiler (3), a double-effect distillation device (4), and an evaporating dish (5); Epoxy resin production wastewater is introduced into the first heat exchange channel of the first heat exchanger (1), and distilled water is introduced into the second heat exchange channel of the first heat exchanger (1); Epoxy resin production waste gas is introduced into the first heat exchange channel of the second heat exchanger (2), and distilled water is introduced into the second heat exchange channel of the second heat exchanger (2); The second heat exchange channels of the first heat exchanger (1) and the second heat exchanger (2) are in communication with the heating boiler (3); The steam outlet of the heating boiler (3) is communicated with the double-effect distillation device (4); The discharge port of the double-effect distillation device (4) is communicated with the evaporating dish (5).

2. The epoxy resin production wastewater waste heat recovery system according to claim 1, characterized in that: Also includes: Dryer (6); The dryer (6) is used to dry the crude crystal product formed in the evaporating dish (5).

3. The epoxy resin production wastewater waste heat recovery system according to claim 1, characterized in that: The first heat exchanger (1) and the second heat exchanger (2) are connected to the heating boiler (3) via an insulated pipe.

4. The epoxy resin production wastewater waste heat recovery system according to claim 1, characterized in that: The first heat exchanger (1) is a liquid-liquid tube heat exchanger, and the second heat exchanger (2) is a vapor-liquid tube heat exchanger.

5. The epoxy resin production wastewater waste heat recovery system according to claim 1, characterized in that: The heating boiler (3) is a sealed steam heating boiler.

6. The epoxy resin production wastewater waste heat recovery system according to claim 1, characterized in that: The evaporating dish (5) is a drying and heating hybrid evaporating dish.

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